Small-tooth-difference speed reducer

Abstract

The invention discloses a small-tooth-difference speed reducer. An inner gear ring and a mounting disc are combined and mounted through a mounting screw; a plurality of planet gears are arranged in the inner gear ring, the centers of the planet gears are equipped with eccentric wheel bearings, the centers of the eccentric wheel bearings are equipped with eccentric wheels, an output disc and a rearbracket are combined and mounted through a pin column, the left end of the output disc is equipped with an output shaft, the center of the inner gear ring is sequentially equipped with an output sealing ring and an output bearing from left to right, and the output shaft is matched with the output bearing for use; the center of the mounting disc is sequentially equipped with a bracket bearing anda rear sealing ring from left to right, the rear bracket penetrates through the bracket bearing and the rear sealing ring, and the rear bracket is matched with the bracket bearing for use; outer toothends of the two planet gears are alternatively engaged with the inner gear ring; input rotation speed per minute of the input shaft is as high as 20 revolutions per minute to 0.02 million of revolutions per minute, a reduction ratio of the input shaft to the output shaft can be 20-500, and speed reduction can be positively and negatively performed; and the planet gears are produced by a powder metallurgical process, and are not subjected to special processing, so that production efficiency is high and cost is low.

Description

technical field [0001] The invention relates to a reducer with few tooth differences. Background technique [0002] The traditional reducer is mainly used for deceleration through the cooperation of large and small gears. The small gear with fast speed slows down the output through the large gear with slow speed to achieve the purpose of deceleration. The volume of the reducer with a large reduction ratio is generally relatively large, and it is difficult to meet the requirements of small volume and large reduction ratio. The number of meshing teeth is small, and the output torque is also small, so that it cannot achieve the purpose of large torque output. Therefore, in view of the shortcomings of the above-mentioned problems in the traditional reducer, the applicant has developed an internal ring gear and a mounting plate that are installed in combination with mounting screws. There are multiple planetary gears in the internal ring gear, and an eccentric gear is arranged at...

AI Technical Summary

Problems solved by technology

The volume of the reducer with a large reduction ratio is generally relatively large, and it is difficult to meet the requirements of small volume and large reduction ratio. The number of meshing teeth is small, and the output torque is also small, so that it cannot achieve the purpose of large torque output.

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